Aristotle's Virtues focuses on Aristotle's philosophical method and his conceptions of form and substance as a way to explicate the main elements of his ethical and political theorizing. This book shows how those highly general features of Aristotle's thought have an important bearing on his conception of the best kind of life for a human being and the kind of political community needed to enable and encourage that kind of life. While explicating fundamental aspects of Aristotle's philosophy of nature, metaphysics, and theory of knowledge, the discussion of them leads to a culminating account of the virtues of both individual and political life.